Home / 258,794.06-388,230.27-81,284.38

Finding the Fourth Proportional to 258,794.06, 388,230.27 and 81,284.38

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Solution

The fourth proportional to 258,794.06, 388,230.27 and 81,284.38 is: 121,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,794.06 : 388,230.27 = 81,284.38 : x
  2. Step 2: Convert to fraction form
    258,794.06/388,230.27 = 81,284.38/x
  3. Step 3: Cross multiply
    258,794.06x = 388,230.27 × 81,284.38
  4. Step 4: Simplify right side
    258,794.06x = 31,557,055,518.79
  5. Step 5: Solve for x
    x = 31,557,055,518.79/258,794.06
  6. Step 6: Final answer
    x = 121,938.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.